Publications by authors named "Syuichi Okada"

Background: Prophylactic coagulation after gastric endoscopic submucosal dissection (ESD) decreases the rate of delayed bleeding; however, it cannot prevent bleeding completely, and delayed bleeding may occur from non-exposed vessels that were not detected immediately after ESD or where prophylactic coagulation was inadequate. Doppler monitoring systems which can evaluate vascular flow have been recently introduced in the endoscopic field. We developed the Doppler probe method (DOP) using the novel system and conducted a comparative study.

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Objectives: Objective assessments of esophageal varices (EVs) are inadequate. The recurrence of variceal bleeding after endoscopic variceal ligation (EVL) is associated with residual blood flow underlying EVL or incomplete treatment of a perforating vein by EVL. We aimed to assess our novel through-the-scope endoscopic Doppler probe method (DOP) for the evaluation and management of EVs.

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We experienced tricuspid valve regurgitation (TR) due to pacemaker lead adherence in an 81-year-old woman and in a 68-year-old woman, who both had right heart failure. The cause of TR was deformation of the tricuspid valve by pacemaker leads. Because of strong adherence between the lead and the leaflet or the tendinous cord, lead extraction and valve replacement were performed.

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Background: Postoperative atrial fibrillation (AF) is a common complication following coronary artery bypass grafting (CABG). We investigated the risk factors for postoperative AF and analyzed the relationship between blood sugar concentration (BS) and AF after CABG.

Methods And Results: A total of 199 consecutive patients who underwent isolated CABG were retrospectively examined and classified according to the presence (n=95) or absence (n=104) of postoperative AF.

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A 66-year-old man was admitted to our institute for surgical treatment of chronic dissecting aortic arch aneurysm with right-sided aortic arch which occurred 2 months previously. The size of the aortic arch aneurysm was larger than 6 cm. Total arch replacement using open stent grafting was performed through median sternotomy.

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Objective: Coronary artery disease and arteriosclerosis obliterans (ASO) frequently coexist. Concomitant revascularization procedures may be required because harvest of the internal thoracic artery (ITA) in patients with ASO carries a risk of leg ischemia. This study reports our experience with combined coronary and femoral revascularization using the ascending aorta to bifemoral bypass.

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A 91-year-old man was transferred to our hospital because of severe chest pain. Chest computed tomography (CT) scan showed impending rupture of the true aneurysm of the aortic arch. The patient underwent emergent graft replacement of the total aortic arch.

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A 77-year-old man complained general fatigue and fever. Preoperative echocardiography revealed vegetation of aortic valve, abnormal shunt flow from the sinus of Valsalva was detected in the right atrium and ventricle without perivalvular abscess cavity or aneurysm of the sinus of Valsalva. He diagnosed aortic valve endocarditis with aorto-right atrium and ventricle fistula.

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A 59-year-old man was admitted to our hospital because of angina pectoris and a large right coronary aneurysm. Two years previously, he underwent percutaneous coronary balloon angioplasty for a stenotic lesion in right coronary artery (RCA) #3. Angiography and computed tomography showed a large right coronary aneurysm.

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A 74-year-old man had pustulant bilateral arthritis complicated with sepsis and disseminated intravascular coagulation (DIC). Microbiologic study of blood sample showed Streptococcus and methicillin resistant Staphylococcus aureus (MRSA). He was complicated with postulant diskitis since then.

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